Combination tenoning and boring machine.



WITNESSES:

A. gs. ROOT. COMBINATION TENONING AND BORING MACHINE. APPLICATION FILEDJULY 21;1908.

Patented my 18, 1909.

' ZSHBETS-SKBBT 1.

1N VE N TOR.

ATTORNEY.

THE Name: PETERS 00., WASHINQYDN, n. c

A. E. ROOT. COMBINATION TBNONING AND 30mm momma. APPLIOATION'IILE-D JULY21,1908.

Patented May 18', 1909.

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WITNESSES.-

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ETERS cug, wAsl-mva o v, u up ALVA E. ROOT, OF PLEASANT-ON,

KANSAS, ASSIGNOE or ONE-HALF TO WILLIAM M. 'LAYToN, or PLEASANTON,KANSAS.

COMBINATION TENONING ANDBORING MACHINE;

Specification of Letters Patent.

Application filed Ju1y21, 1908.

Patented May 18, 1909.

Serial No. 444,659.

To all whom it may concern:

Be it known that I, ALVA E. Roo'r,a citi zen of the United States,residing at Pleasan ton, in the county of Linn and State of Kan sas,have invented certain new and useful Improvements in CombinationTenoningand Boring Machines, of which the following is a specification.

My invention relates to improvements in combination tenoning and boringmachines, and my object is to provide a simple-ma chine of thischaracter whereby the work of forming tenons on Spokes and the boring offellies to receive said tenons may be-easily and ra idly performed. Themachine is ad justab e so that tenons may be cut at any angle for spokesto be used in dished wheels.

In order that the invention maybe fully understood, reference will nowbe made to the accompanying drawings, in which:

Figure 1 represents a side elevation of the machine in the act ofcutting a tenon on the end of a spoke. Fig. 2 is a plan view of themachine in the act of boring a hole in a felly to receive the tenon.Fig. 3 is an enlarged broken section on line III-III of Fig. 2. Fig. 4is an enlarged cross section on line IVIV of Fig. 1. Fig. 5 is anenlarged broken longitudinal section on line V-V of Fig. 2, with some ofthe parts removed.

In carrying out the invention, I employ a bearing 1, provided with anintegral upright arm 2, and a rotatable and slidable drillstock 3, whichis provided at its forward end with a chuck 4, and at its rear end witha crank 5 whereby it may be rotated.

6 designates a hollow auger of ordinary construction, removably carriedby chuck 4 for the purpose of cutting a tenon on the end of spoke 7,which is reliably held in position by a clamp 8. Said clamp consists ofa lower jaw 9, an upper jaw 10, and a cam-lever 11 for forcing the jawstightly into contact with the spoke, as shown in Fig. 1. Jaws 9 and 10are loosely connected by a pair of eye-bolts 12 provided at their lowerends with winged-nuts 13 whereby the jaws are adjusted to receive spokesof different diameters and to regulate the tension of a plurality ofexpansion springs hereinafter de scribed.

Cam-lever 1 1 is provided at its forward end with trunnions 11,fulcrumed in the eyebolts and extending into a pair of grooved guides10, on jaw 10, to relieve the eye-bolts of any lateral strain thecam-lever might ex ert thereon while being. depressed.

The jawsare normally heldapart by a pair of expansio'nsprings .14, and Ialso place a pair of springs 15 between the nuts13 and the lowermost jaw 9 to enable the cam-lever to be fully depressedafter the jaws havebeen firmly brought into contact with the spoke. Lowermost jaw 9 isprovided with a ratchetbar 16 which acts as a fulcrum for the upper jaw10 when gripping thefelly 17, as shown in Figs. 2 and 3.

Whenit is desired to grip a spoke, ratchet bar 16 is thrown downward toan inoperative position as shown in Fig. 1, so as to be out of the way.of the spoke.

Jaw 10 of the clamp is provided with-an upwardlysextending lug 18carrying'a screw 19 upon which an adjusting-rod 20 is pivotally secured,said adjusting-rod having a sleeve 2O slidably engaging arm 2 and pr0-videdwith a;set -SO.1'eW 21 adapted to engage said arm. This arrangementpermits the clamp to be set at an angle wit respect to the auger, sothat the tenon may be cut at an angle to the spoke when the latter is tobe used in a dished wheel. After the clamp has been set at the desiredangle it is reliably held by a locking-lever or tail nut 22, adjustablyengaging screw 19.

The auger is pushed forward during the operation of cutting the tenon,by means of an expansion spring 24, bearing at its rear end against awasher 25 and at its forward end against a lock comprising a washer 26and a sleeve 27, which latter is provided with a forward extension 28,which throws washer 26 obliquely to stock 3, and causes it to bite thesame. This arrangement forms convenient means for tensioning spring 24so that the latter will force the auger forward and thus relieve theoperator of this work.

After the tenon has been cut on the spoke the operator grasps auger 6and pushes the same backward, together with stock 3, as indicated bydotted lines, Fig. 1, preparatory to cutting a tenon on another spoke.en the auger and the stock are pushed backward, as above described, theyare held in this position by a lock consisting of a washer 29, which ispushed forward against a rear ward extension 30, which tilts the washerobliquely to stock 3, and thus causes it to bite and hold the same inits rearmost position.

When it is desired to bore holes in the fellies to receive the tenons, abit 3.1 is substituted for the hollow auger 6.

From the above description it' is apparent that I. have produced amachine which is simple in construction, easy of operation, and wherebyconsiderable work may. be accurately and quickly performed by a singleoperator.

Having thus described my invention, what I claim is: v

1. A wood working tool comprising in combination with a frame, a drillstock having a bearing therein, an overhanging clamp positioned in frontof said drill stock, and means for varying the vertical inclinationthereof with respect to said drill stock, said clamp comprising upperand lower jaws, eyebolts upon which-said jaws are slidable coil springscarried on said bolts between said jaws to tension them apart, coilsprings carried below said lower jaw to tension said jaw against saidfirst spring, nuts threaded on said bolts to retain and regulate thetension of said coil springs, a cam lever trunnioned in said eye-boltsand bearing on said upper jaw, and a serrated lever pivoted to'the rearof one of said jaws and adapted for engagement by the other jaw, tobrace said jaws when the forward lips thereof are used.

2. A wood working tool comprising in combination with a frame, a drillstock having a bearing therein, an overhanging clamp positioned in frontof said drill stock, said clamp comprising upper and lower jaws, meansfor varying the vertical inclination of said clamp, and means comprisinga serrated lever pivoted to the lower jaw of said clamp and adapted forengagement by its serrations with the upper jaw of said clamp, forbracing the rear of said clamp when only the forward lips thereof areused.

'3. A wood working tool, comprising, in combination with a frame, adrill stock hav ing a sliding and rotary bearing therein, and a clampoverhanging said stock and positioned in front thereof, said stockhaving means for automatically fixing it in its sliding relation to saidbearing, said means comprising lock-washers disposed on each side ofsaid bearing, a collar having a one point bearing against the forwardwasher, an expan sion spring carried on said stock and acting againstsaid collar and bearing, and a one point bearing formed on the rear ofsaid bearing and actin against the rear washer, said washers, undertension of said spring and canted by said one point bearings, acting tohold said stock fixed in its sliding relation to said bearing.

In testimony whereof I affix my signature, in the presence of twowitnesses.

ALVA E. ROOT. Witnesses:

F. G. FIsoHER, M. Cox.

